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J. M VANOVBB. SLIDING ORROLLING GATE. NO- 379,918. Patented Mar. 2Q, 18 aa.

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MKM 5 NITED STATES PATENT OFFIC,

JOSEPH M. VANOVER, TERRE HAUTE, INDIANA, ASSIGNOR OF ONE-HALF' TO ALLEN I. ABBOTT, OF SAME PLACE.V

VSLIVDING OR ROLLING GATE.

SPECIFICATION forming part of Letters Patent No. 379,918, dated March 20. 1888.

Application-filed December 16, 1887. Serial No. 258.101. (No modell.)

To wZZ whom, it may concern:

Be it known that I, JOSEPH M. VANOVER, a citizen of the United States,residing at Terre Haute, in the county of Vigo and State of Indiana, have invented certain new and useful Improvementsin Sliding or Rolling Gates; and

I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to v [o which it appertains to make and use the same.

This invention relates to certain new and useful improvements in automatic sliding or rolling gates; and it consists, substantially, in lsuch features of arrangement, construction,

and combinations of parts as will hereinafter be more particularly described.A

The object of the invention is to provide an automatic sliding or rolling gate which can be operated to open or close by the wheels of a zovehicle without necessity of the driver or occupants alightingfor that purpose.

The invention also has other objects in view, all as will more fully hereinafter appear when taken in connection with the accompanying Figure l is a perspective view of an automatic sliding or rolling gate and the mechanism by which the same is operated to open and close. Fig. 2 is a front elevation of the same,

3o partly in section, and indicating the arrangement of a spring on the connecting-rod for relieving shock thereto due to violent opening or closing of the gate. Fig. 3 is a detail.

Reference being had to the several parts by the letters marked thereon, A represents a gate of any preferred construction, which is supported by and slides on anti-friction rolls 1 2 3 4, held to the sides lof the posts or uprights a a. Passing through the main postor 4o upright at near its base or bottom is a -rockshaft, B, that extends to opposite sides of the gate for a suitable distance. and to this shaft is keyed or fixed an arm or lever, G, which in turn is movably connected, as at c, to a movable connecting-rod, D, the other end of said rod being provided with a spiral or helical spring, E, and passing through a loop or guide,

e, secured to one end of the gate, as shown. This spring has its seat or bearingbetween a small nut, f, and a shoulder or ange, g,formed 5o with or provided on the connecting-rod. v The purpose of the spring E is to relieve the shock caused by the opening and closing ofthe gate, and thus prevent loosening of the parts of the gate as wellas distortion of the connecting-rod.

For the purpose of lessening friction, Iprefer to employ asmall roll, h, in the side of the connecting-rod, the same operating in a vertical plane and moving against theside of one 6o of the uprights ofthe gate. When the gate is openedor closed, the connecting-rod describes an arc of acircle, and the usefulness of this roll for the purpose stated will be apparent. 65

Each end of the rock-shaft is provided with a beveled gear-wheel, i, meshing with corresponding wheels carried by the horizontal members j of two trip-stirrups, k, having-their bearingsin small standards l, and the sides of 7o a boxing orhousing, m, designed to protect the parts from dirt and rust. It is by the action of the wheels of a vehicle passing over the stirrup at one side that the gate is opened,

and afterward closed by passing over the stirrup at the other side. I

From the foregoing description it will be seen that in order to open the gate it is simply necessary to. cause the wheels of a vehicle to pass over the stirrup to one side thereof, and Ro to pass over the opposite stirrup in the same direction to close the gate.

It will be apparent that the gate can, also be readily opened or closedA by persons on foot by simply exerting strength sufficient therefor.

It is evident that immaterial departures may be permitted from the general construction and arrangement of parts contributing toward my invention, and for this reason Ido not Wish to be understood as limiting myself 9o thereto in precise detail.

Having thus described my invention, what I claim as new, and desire to secure by Letters ll. In 'an automaticsliding or rolling gate, 95

the combination, with the gate having at its end the loop orl guide-e, of the rock-shaft extending to opposite sides thereof and having at each end a gear-wheel, the stirrups k, also having gear-wheels meshing with those of the shaft,t.he arm or lever keyed to the shaft, and the connecting-rod movably connected to said 5 lever at one end, its other end passing through the loop and bearing a spring, substantially in the manner and for the purpose described. 2. In an automatic sliding or rolling gate,

the combination therewith of the rock-shaft, Io the stirrnps k, the lever keyed to the shaft, and the connecting rod movably connected to the lever, the said connecting-rod passing through the loop eand having thereon aspring, and provided in its side with a small frictionroll, substantially as and for the purpose de- 15 scribed.

In testimony whereof I alix my signature in presence of two witnesses.

JOSEPH M. VANOVER. Witnesses:

JOHN B. DEEDs, WARREN W. FERRIs. 

